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Westclox Model 66 Movement Movement Material Variations

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Early 66 movement plates are brass, they are steel during WWII, later ones are aluminum

Movement Material Brass Movement Plates:

Brass movement plates. USA examples 12-30 to 10-42 and from 11-45 to 12-51.

Movement Material Aluminum Movement Plates:

Aluminum movement plates. USA examples 1-53 on.

Movement Material Steel Movement Plates:

Steel movement plates. Used on the Waralarm clocks (except early fiber case examples have brass front plate and steel back plate).
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